Usually, the nouns of the following categories are neuter words:
many offspring of humans and animals: das Kind (child), Kalb (calf), Küken (chick), Lamm (lamb)
names of animals that include both male and female: das Pferd (horse), Schwein (pig), Schaf (sheep), but exceptions: der Fisch (fish), der Hund (dog), die Maus (mouse), die Schlange (snake)
names of cities, continents and most countries: das alte Berlin (old Berlin), Asien (Asia), Frankreich (France), but exceptions: der Irak (Irak), der Iran (Iran), der Libanon, die Schweiz (Switzerland), and countries ending with -ei: die Türkei (Turkey)…
metals and chemical elements: das Gold (gold), Silber (silver), Eisen (iron), Blei (lead), Chrom (chromium), Uran (uranium), but exceptions: der Stahl (steel), der Schwefel (sulphur), die Bronze (bronze)
all words that are from other parts of speech that are used as nouns but do not signify people: das Essen (meal, food), Leben (life), Rauchen (smoking), das Ich (ego), das Schöne (beauty), das Wenn und Aber ("if, and, or but"), das Blaue (blue yonder), das A und O (the alpha and omega)
collective nouns: das Volk (folk), Gebirge (group of mountains), Besteck (cutlery), Geschirr (crockery, dishes), but exception: der Gesang (song, singing)
numbers when they indicate a set: das Duo (duet), das Quintett (quintet), das Jahrzehnt (decade), das Dutzent (dozen), das Jahrhundert (century), das Jahrtausend (millennium)
nouns with the suffixes , and : das Mädchen (girl), Fräulein (Miss), Rätsel (puzzle), Mitbringsel (small present)
nouns with the suffixes , and : das Ballett (ballet), Sonnett (sonett), Sakrament (sacrament), Parlament (parliament), Neutrum (neuter), Helium (helium)